It seems like it's going to be by far easiest for our designer to modify js, css, some cshtml, and theme settings on a deployed [development] site (not have to use visual studio).
I imagine merging those changes back into the visual studio solution will be a matter of carefully merging only the related design/content files and database vales that are theme related - can probably be scripted once all those areas/files are identified.
Before I do all that I want to check to see if there is anything available that makes this easy already?
possibly like a theme setting export/import... something along those lines, even if it's only in script form.
Thanks